noun
(uncountable, Zen Buddhism) A sudden inexpressible feeling of spiritual awakening or enlightenment, the result of meditation and study.
(uncountable, figurative) Enlightenment, epiphany.
(countable, biochemistry) A mutant gene of Drosophila, a genus of fruit flies, that causes homosexual behaviour in males (specifically, courtship directed to other males).
noun
(Japanese mythology) A yokai (“supernatural monster”) having the form of a mind-reading monkey-like creature said to dwell in the mountains of the historical Japanese provinces of Hida and Mino (present-day Gifu Prefecture).